Effects of radial losses of particle and energy on the stability of detachment front in a divertor plasma

Satoshi Togo; Makoto Nakamura; Yuichi Ogawa; Katsuhiro Shimizu; Tomonori Takizuka; Kazuo Hoshino

doi:10.1585/pfr.7.2403087

Effects of radial losses of particle and energy on the stability of detachment front in a divertor plasma

Satoshi Togo, Makoto Nakamura, Yuichi Ogawa, Katsuhiro Shimizu, Tomonori Takizuka, Kazuo Hoshino

Research output: Contribution to journal › Article › peer-review

Abstract

Operation under partially detached divertor (PDD) plasmas is a hopeful way in order to reduce the divertor heat load in the next generation tokamaks. The physical mechanism of PDD plasmas, however, has not fully been understood yet. We have studied them with a multi-layer one-dimensional divertor model. The PDD plasmas are successfully reproduced by introducing a neutral gas puffing model. Effect of the cross-field heat transport on the PDD plasmas is investigated. It is found that cross-field heat transport both in the SOL region and in the divertor region prevents detachment fronts from moving upstream in a detached flux tube.

Original language	English
Article number	2403087
Journal	Plasma and Fusion Research
Volume	7
Issue number	SPL.ISS.1
DOIs	https://doi.org/10.1585/pfr.7.2403087
Publication status	Published - 2012
Externally published	Yes

Keywords

Cross-field heat transport
Detachment front
Divertor heat load
Neutral model
Partially detached divertor plasma
Plasma fluid model
Thermal stability

ASJC Scopus subject areas

Condensed Matter Physics

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10.1585/pfr.7.2403087

Cite this

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abstract = "Operation under partially detached divertor (PDD) plasmas is a hopeful way in order to reduce the divertor heat load in the next generation tokamaks. The physical mechanism of PDD plasmas, however, has not fully been understood yet. We have studied them with a multi-layer one-dimensional divertor model. The PDD plasmas are successfully reproduced by introducing a neutral gas puffing model. Effect of the cross-field heat transport on the PDD plasmas is investigated. It is found that cross-field heat transport both in the SOL region and in the divertor region prevents detachment fronts from moving upstream in a detached flux tube.",

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journal = "Plasma and Fusion Research",

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T1 - Effects of radial losses of particle and energy on the stability of detachment front in a divertor plasma

AU - Togo, Satoshi

AU - Nakamura, Makoto

AU - Ogawa, Yuichi

AU - Shimizu, Katsuhiro

AU - Takizuka, Tomonori

AU - Hoshino, Kazuo

PY - 2012

Y1 - 2012

N2 - Operation under partially detached divertor (PDD) plasmas is a hopeful way in order to reduce the divertor heat load in the next generation tokamaks. The physical mechanism of PDD plasmas, however, has not fully been understood yet. We have studied them with a multi-layer one-dimensional divertor model. The PDD plasmas are successfully reproduced by introducing a neutral gas puffing model. Effect of the cross-field heat transport on the PDD plasmas is investigated. It is found that cross-field heat transport both in the SOL region and in the divertor region prevents detachment fronts from moving upstream in a detached flux tube.

AB - Operation under partially detached divertor (PDD) plasmas is a hopeful way in order to reduce the divertor heat load in the next generation tokamaks. The physical mechanism of PDD plasmas, however, has not fully been understood yet. We have studied them with a multi-layer one-dimensional divertor model. The PDD plasmas are successfully reproduced by introducing a neutral gas puffing model. Effect of the cross-field heat transport on the PDD plasmas is investigated. It is found that cross-field heat transport both in the SOL region and in the divertor region prevents detachment fronts from moving upstream in a detached flux tube.

KW - Cross-field heat transport

KW - Detachment front

KW - Divertor heat load

KW - Neutral model

KW - Partially detached divertor plasma

KW - Plasma fluid model

KW - Thermal stability

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Effects of radial losses of particle and energy on the stability of detachment front in a divertor plasma

Abstract

Keywords

ASJC Scopus subject areas

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